friendly fire.

listen to the pronunciation of friendly fire.
Английский Язык - Турецкий язык
(Askeri) dost ateşi
ff
(Askeri) Bak. "frigate"
Английский Язык - Английский Язык
blue-on-blue
Weapons fire from allied or friendly forces, as opposed to fire coming from enemy forces or enemy fire
ff
Discharge of a military weapon that injures or kills an ally
(Military) gun and ammunition fire that is shot by soldiers from one's own army (and not by the enemy army)
fire that injures or kills an ally